486 Socket Blaster, Adding 3.45v support to the supposedly unupgradable IBM PS/1

Part 1: Repair of PSU and CPU. here:    • You're not going to believe what I fo...  
Part 2: Hacking the MOBO: here:    • Motherboard hacking for 2.5-speed inc...  
Part 3, This video!
Part 4, Overclocking:    • 3.6X faster DOOM! Sneaky IBM Tried to...  
Part 5, 4x mode!    • Hardcore vintage 486 hacking for over...  
PCB Prototype the Easy Way. Full feature custom PCB prototype service. https://www.pcbway.com/
GitHub project page: https://github.com/scrapcomputing/486...
Vogons post here: https://www.vogons.org/viewtopic.php?...
--------------------------------------------------------------------------------------
New on patreon.com/Epictronics
--------------------------------------------------------------------------------------
Tools I regularly use
DeoxIT D5 Contact Cleaner
Hanstar 861DW Rework Station
Pro'sKit SS-331 Desoldering Station
UNI-T UT61E Auto Ranging Multimeter
UNI-T UT890D Manual Ranging Multimeter
MESR-100 mk2 ESR meeter
PINECIL Soldering Iron
PinePowerPSU
TS-100 Soldering Iron
AMTECH NC-559-ASM Flux
MaAnt Grinding Pen
Multicore 60/40. 0.38mm and 0.5mm solder
TL866 II Plus Programmer
Tektronix 2246A 100 MHz four-channel analog scope
PCBs from PCBWay.com :)
--------------------------------------------------------------------------------------
patreon.com/Epictronics
Join me on Twitter:   / epictronics1  
Music by Karl Casey @ White Bat Audio